Biological Assembly 1  

 3D View: Structure | 1D-3D View | Validation Report | Ligand Interaction

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 30.15 kDa 
• Atom Count: 2151 
• Modelled Residue Count: 250 
• Deposited Residue Count: 256 
• Unique protein chains: 1

5CSM

YEAST CHORISMATE MUTASE, T226S MUTANT, COMPLEX WITH TRP

• PDB DOI: 10.2210/pdb5CSM/pdb

• Classification: COMPLEX (ISOMERASE/PEPTIDE)
• Organism(s): Saccharomyces cerevisiae
• Expression System: Saccharomyces cerevisiae
• Mutation(s): Yes 


• Deposited: 1997-07-14 Released: 1998-01-14 
• Deposition Author(s): Straeter, N., Schnappauf, G., Braus, G., Lipscomb, W.N.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.236 
• R-Value Work: 0.186 
• R-Value Observed: 0.186 

Literature

Mechanisms of catalysis and allosteric regulation of yeast chorismate mutase from crystal structures.

Strater, N., Schnappauf, G., Braus, G., Lipscomb, W.N.

(1997) Structure 5: 1437-1452

• PubMed: 9384560 
• DOI: 10.1016/s0969-2126(97)00294-3
• Primary Citation of Related Structures:  
  3CSM, 4CSM, 5CSM


• PubMed Abstract: 
  

Chorismate mutase (CM) catalyzes the Claisen rearrangement of chorismate to prephenate, notably the only known enzymatically catalyzed pericyclic reaction in primary metabolism. Structures of the enzyme in complex with an endo-oxabicyclic transition state analogue inhibitor, previously determined for Bacillus subtilis and Escherichia coli CM, provide structural insight into the enzyme mechanism. In contrast to these bacterial CMs, yeast CM is allosterically regulated in two ways: activation by tryptophan and inhibition by tyrosine. Yeast CM exists in two allosteric states, R (active) and t (inactive).

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Related Citations: 

• Crystal Structure of the T State of Allosteric Yeast Chorismate Mutase and Comparison with the R State
  Strater, N., Hakansson, K., Schnappauf, G., Braus, G., Lipscomb, W.N.
  (1996) Proc Natl Acad Sci U S A 93: 3330

• Location of the Active Site of Allosteric Chorismate Mutase from Saccharomyces Cerevisiae, and Comments on the Catalytic and Regulatory Mechanisms
  Xue, Y., Lipscomb, W.N.
  (1995) Proc Natl Acad Sci U S A 92: 10595

• The Crystal Structure of Allosteric Chorismate Mutase at 2.2-A Resolution
  Xue, Y., Lipscomb, W.N., Graf, R., Schnappauf, G., Braus, G.
  (1994) Proc Natl Acad Sci U S A 91: 10814

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Organizational Affiliation: 

Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA 02138, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CHORISMATE MUTASE	A	256	Saccharomyces cerevisiae	Mutation(s): 1  EC: 5.4.99.5
UniProt
Find proteins for P32178 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c)) Explore P32178  Go to UniProtKB:  P32178

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
TRP	B [auth A]	TRYPTOPHAN C11 H12 N2 O2 QIVBCDIJIAJPQS-VIFPVBQESA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.236 
• R-Value Work: 0.186 
• R-Value Observed: 0.186 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 94.6	α = 90
b = 51.4	β = 116.6
c = 66.8	γ = 90

Software Package:

Software Name	Purpose
XDS	data scaling
XDS	data reduction
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1997-07-14 
• Released Date: 1998-01-14 
Deposition Author(s): Straeter, N., Schnappauf, G., Braus, G., Lipscomb, W.N.

Revision History  

• Version 1.0: 1998-01-14
  Type: Initial release
  
• Version 1.1: 2008-03-25
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance
• Version 1.3: 2021-11-03
  Changes: Database references, Derived calculations